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INVENTORIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 2,243 $ 2,935
Work in process 1,109 1,209
Finished goods 1,087 1,316
Gross inventories 4,439 5,460
Less: provision for obsolescence (388) (392)
Inventories, net 4,051 $ 5,068
Inventory write-down 400  
Inventory write down reversals $ 100